Question

Opening of flowers in the cymose inflorescence is

• A. Acropetal
• B. Centrifugal
• C. Basipetal
• D. Centripetal

Answer 1

Answer: (B)

Centrifugal

Mosey (Oncidium irene ) belongs to family Orchidaceae. It is commonly known as dancing lady orchid. The flowers in the centre open first and those at the periphery open last.

Acropetal opening means opening of the flowers from base to apex in succession.

Basipetal opening means opening of the flowers from apex to base in succession.

Centripetal opening of flowers takes place in an inflorescence of many flowers as in sunflower which open in order from outside to the innermost.

Therefore, the correct answer is option B.